Predator-prey body mass ratios depend on the total mass range of the food webs.

<p>Plots show the values of predator-prey body mass ratios plotted against the total mass range of the food webs (). The total mass range was manipulated by changing the value of of the log-normal distribution of body masses in the case of the two traits allometric model and by changing the values of the parameter in the case of the niche model (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0099355#s2" target="_blank">methods</a> for details). Colours represent intervals with a given percentage of observations around the median (see the legend).